Lab 1.1.8 Web Browser Basics Objective • Learn how to use a web browser to access Internet sites.. • Access selected web sites to learn the definitions of networking terms.. • Use hyper
Trang 1Lab 1.1.8 Web Browser Basics
Objective
• Learn how to use a web browser to access Internet sites
• Become familiar with the concept of a URL
• Use a search engine to locate information on the Internet
• Access selected web sites to learn the definitions of networking terms
• Use hyperlinks to jump from the current web site to other web sites
Background
A web browser is a very powerful tool that many people use everyday to surf around different sites
on the World Wide Web A web browser can help find anything from airline flight information to the directions on how to get to a place A browser is a client application program or software that is loaded on the PC to gain access to the Internet and local web pages
The web site name, such as www.cisco.com, is a Universal Resource Locator (URL) This URL
points to the World Wide Web server (WWW) in the Cisco domain (CISCO) under the Commercial domain (COM)
When the URL is typed, the browser makes a request of a Domain Name Server (DNS) to convert the URL to an IP address The IP address is used to contact the site
The browser can be used to access search engines by typing the name in the address bar Some search engines include www.yahoo.com, www.excite.com, www.lycos.com and www.google.com There are several web sites that provide definitions of networking and computer related terms and acronyms These can be used to help learn more about networking and to do research on the Internet Two of these are www.whatis.com and www.webopedia.com
Most web sites contain hyperlinks Hyperlinks are words that are underlined and highlighted By clicking on a hyperlink a user "jumps" to another page on the current site or to a page on another web site
A computer configured with an up-to-date browser and access to the Internet is required
Step 1 Start the web browser
If using a modem to make the connection, dial the number before starting the web browser What version of Netscape or Internet Explorer is being used?
Step 2 Identify the location or address field
After the browser has been started, click and highlight the Location field in Netscape or the
Address field in Internet Explorer in the toolbar at the top of the page Press the Delete key to delete
the current address
1 - 2 CCNA 1: Networking Basics v 3.0 - Lab 1.1.8 Copyright 2003, Cisco Systems, Inc.
Trang 2Step 3 Type in a Web URL
Type in www.cisco.com and press Enter This is how to navigate from one site to another on the
World Wide Web (WWW)
Step 4 Type in another Web URL
To load a new page, type in a new URL such as www.cnn.com Notice the status on the bottom bar
of the browser What does it say?
Step 5 Use the browser management buttons
Each of the buttons on top of the browser has a function If the mouse is positioned over a button a box will appear identifying the button
Click on the Back button What did it do?
Click on the Forward button Does it return to the CNN Web site?
Try clicking on the Reload or Refresh button What do they do?
Type www.microsoft.com and press Enter Click on the Stop button as the window is loading
What happens?
Step 6 Use a search engine
Type the URL for a search engine such as www.google.com Search for the word browser What
was the result?
Step 7 Access networking terms definitions web sites
Enter the URL for www.webopedia.com Enter the keyword of browser What was the result?
What hyperlinks were available?
Enter the URL for www.whatis.com Look up the keyword of DNS Click on the Exact Match for DNS under whatis.com terms What does it say about DNS?
Reflection
Identify a way to navigate from one site to another
If the same graphics or text is seen the next time the NBA site is visited, what should be done to ensure that updated news is seen?
2 - 2 CCNA 1: Networking Basics v 3.0 - Lab 1.1.8 Copyright 2003, Cisco Systems, Inc.